They are the country with the most military and paramilitary personnel in the world at 7,769,000 so worst case scenario they can help prolong a war at a pace that would be hard to maintain for any Western power, and the ones who are next in the list, except South Korea, aren’t friends with the West, too.
Does NK even have anyone in the country with actual experience with war?
Some Korean war vets are still alive. The relevant thing here is they have a lot of (probably very crappy) shells.
They are the country with the most military and paramilitary personnel in the world at 7,769,000 so worst case scenario they can help prolong a war at a pace that would be hard to maintain for any Western power, and the ones who are next in the list, except South Korea, aren’t friends with the West, too.